When should I plant Leek in Zone 4b?

Start Leek seeds indoors around 20 Th2. Transplant outdoors after 17 Th4. Expect first harvest around 16 Th7.

What is the last frost date for Zone 4b?

The average last spring frost date for Zone 4b is 1 Th5. The first fall frost averages 5 Th10, giving a 157-day growing season.

Can I grow Leek in Zone 4b?

Yes. Leek needs 120 days to harvest. Zone 4b has a 157-day growing season, which is sufficient.

Growing Leek in Zone 4b

Zone 4b has cold winters and a moderate growing season. Timing is key for Leek in this zone. Sương giá cuối: 1 Th5. Sương giá đầu: 5 Th10.

Planting Calendar

Indoor

Outdoor

Harvest

20 Th25 Th10

Season: 1 Th5 – 5 Th10 (157 ngày)

Vùng4b

Sương giá cuối1 Th5

Sương giá đầu5 Th10

Mùa vụ157 ngày

Thu hoạch120 ngày

Ánh sángNắng hoàn toàn

When to Plant Leek in Zone 4b

Start Seeds Indoors: 20 Th2

Start Leek seeds indoors around 20 Th2 (10 tuần trước sương giá cuối). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: 17 Th4

Transplant Leek seedlings outdoors after 17 Th4. Wait until soil temperature reaches 45F. Space plants at 4/m² (15cm khoảng cách). Harden off plants for a week before moving outside.

Harvest: 16 Th7

First harvest approximately 16 Th7 (~90 ngày from transplant). Continue harvesting until first frost (5 Th10). Leek can overwinter in mild climates for continued harvest.

Cây trồng đồng hành

✅ Cà rốt✅ Hành tây✅ Cần tây

❌ Đậu❌ Đậu Hà Lan

Leek in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

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